Cat litter sifter



FIG. 1 is a perspective view;

FIG. 2 is a left end view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a bottom side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right end view thereof; and,

FIG. 7 is a top side view therof. 

The ornamental design for a cat litter sifter, as shown. 